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disco: Create a mutable DiscoInfoResult at the beginning of its parsing.

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This commit is contained in:
Emmanuel Gil Peyrot 2017-07-29 04:25:55 +01:00
parent 58760fc28d
commit 5ece20a029
1 changed files with 15 additions and 19 deletions
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34
src/disco.rs
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@ -99,16 +99,17 @@ impl TryFrom<Element> for DiscoInfoResult {
return Err(Error::ParseError("This is not a disco#info element."));
}
let mut identities: Vec<Identity> = vec!();
let mut features: Vec<Feature> = vec!();
let mut extensions: Vec<DataForm> = vec!();
let node = get_attr!(elem, "node", optional);
let mut result = DiscoInfoResult {
node: get_attr!(elem, "node", optional),
identities: vec!(),
features: vec!(),
extensions: vec!(),
};
for child in elem.children() {
if child.is("feature", ns::DISCO_INFO) {
let feature = get_attr!(child, "var", required);
features.push(Feature {
result.features.push(Feature {
var: feature,
});
} else if child.is("identity", ns::DISCO_INFO) {
@ -124,7 +125,7 @@ impl TryFrom<Element> for DiscoInfoResult {
let lang = get_attr!(child, "xml:lang", optional);
let name = get_attr!(child, "name", optional);
identities.push(Identity {
result.identities.push(Identity {
category: category,
type_: type_,
lang: lang,
@ -135,31 +136,26 @@ impl TryFrom<Element> for DiscoInfoResult {
if data_form.type_ != DataFormType::Result_ {
return Err(Error::ParseError("Data form must have a 'result' type in disco#info."));
}
match data_form.form_type {
Some(_) => extensions.push(data_form),
None => return Err(Error::ParseError("Data form found without a FORM_TYPE.")),
if data_form.form_type.is_none() {
return Err(Error::ParseError("Data form found without a FORM_TYPE."));
}
result.extensions.push(data_form);
} else {
return Err(Error::ParseError("Unknown element in disco#info."));
}
}
if identities.is_empty() {
if result.identities.is_empty() {
return Err(Error::ParseError("There must be at least one identity in disco#info."));
}
if features.is_empty() {
if result.features.is_empty() {
return Err(Error::ParseError("There must be at least one feature in disco#info."));
}
if !features.contains(&Feature { var: ns::DISCO_INFO.to_owned() }) {
if !result.features.contains(&Feature { var: ns::DISCO_INFO.to_owned() }) {
return Err(Error::ParseError("disco#info feature not present in disco#info."));
}
Ok(DiscoInfoResult {
node: node,
identities: identities,
features: features,
extensions: extensions
})
Ok(result)
}
}